期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 85, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4891417
关键词
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资金
- U. S. Army Research Office [W911NF-13-1-0059]
- U. S. Army Research Office DURIP award [W911NF-13-1-0293]
- Institute for Quantum Information and Matter, an NSF Physics Frontiers Center [PHY-1125565]
- Gordon and Betty Moore Foundation [GBMF1250]
- NSF [DMR-1265162]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1265162] Funding Source: National Science Foundation
Nonlinear optical generation from a crystalline material can reveal the symmetries of both its lattice structure and underlying ordered electronic phases and can therefore be exploited as a complementary technique to diffraction based scattering probes. Although this technique has been successfully used to study the lattice and magnetic structures of systems such as semiconductor surfaces, multiferroic crystals, magnetic thin films, and multilayers, challenging technical requirements have prevented its application to the plethora of complex electronic phases found in strongly correlated electron systems. These requirements include an ability to probe small bulk single crystals at the mu m length scale, a need for sensitivity to the entire nonlinear optical susceptibility tensor, oblique light incidence reflection geometry, and incident light frequency tunability among others. These measurements are further complicated by the need for extreme sample environments such as ultra low temperatures, high magnetic fields, or high pressures. In this review we present a novel experimental construction using a rotating light scattering plane that meets all the aforementioned requirements. We demonstrate the efficacy of our scheme by making symmetry measurements on a mu m scale facet of a small bulk single crystal of Sr2IrO4 using optical second and third harmonic generation. (C) 2014 AIP Publishing LLC.
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